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특허 상세정보

Caster wheel arrangements

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B60B-033/00    B62B-005/02    B62B-003/14   
미국특허분류(USC) 280/005.2; 016/018B; 016/047
출원번호 US-0052657 (2011-03-21)
등록번호 US-8910951 (2014-12-16)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Merchant & Gould P.C.
인용정보 피인용 횟수 : 0  인용 특허 : 25
초록

A caster wheel arrangement includes a base; a yoke rotatably mounted to the base via a kingpin; at least a first caster wheel rotatably mounted to the yoke; and an assist arrangement moveably mounted to the yoke. The assist arrangement facilitates travel of the caster wheel arrangement over a surface transition (e.g., a gap, a rise, etc.). Non-limiting example assist arrangements include a leading wheel, a leading variable radius wheel, a trailing wheel, a step member, and combinations thereof.

대표
청구항

1. A caster wheel arrangement comprising: a support frame;at least a first primary wheel coupled to the support frame, the first primary wheel having a first radius;a leading wheel coupled to the support frame at a position forward of the first primary wheel, the leading wheel having a second radius that is smaller than the first radius of the first primary wheel, and the leading wheel being raised relative to the first primary wheel while the caster wheel arrangement travels over flat ground; anda trailing wheel coupled to the support frame at a positio...

이 특허에 인용된 특허 (25)

  1. Schaffner, Walter E.; Watkins, Walter A.; White, Jr., Gerald J.. Anti-tip caster suspension for a wheelchair. USP2003046543798.
  2. Morndal,Staffan; Karlsson,Bjorn; Dahlquist,Adam. Arrangement in a wheel lifting mechanism. USP2006057036185.
  3. Cheng, Pi-Ying; Wong, Kian-Poh. Assistant apparatus for surmounting barrier. USP2010117837201.
  4. Amdahl, Keith Louis; Otterson, Dan L.. Brake assembly and control mechanism for a cart, and method. USP2010127857108.
  5. Otterson,Dan L.. Brake assembly and control mechanism for a cart, and method. USP2008117448476.
  6. Chen Ding-Fang,TWX. Caster structure for cases. USP1998105815885.
  7. Smart Richard C. (3502 Buckskin Rd. Coeur d\Alene ID 83814). Convertible railway velocipede. USP1980104230046.
  8. Gregg John D. W. (Newtownabbey GB5). Heavy duty polymeric spring member and combination of spring and castor construction. USP1984084467496.
  9. Burbank Charles H. (Geneseo NY) Lewis Robert J. (Binghamton NY). Material handling vehicle. USP1985084534433.
  10. Hosoda, Yuji. Moving robot. USP2010037677345.
  11. Nakatsukasa, Eiji; Hanami, Hidenori; Kitamura, Hiroharu; Mikami, Kanji; Kamoto, Katsutoshi. Moving unit. USP2004066752400.
  12. Lepek Alexander (14b Moshe Sharet Blvd. Jerusalem ILX 96920). Obstacle overcoming vehicle suspension system. USP1993125273296.
  13. Kraft Brett W. (11667 W. 90th St. Overland Park KS 66214). Robotic inspection vehicle. USP1994095350033.
  14. Schurig Karl,DEX. Roller wheel device for supporting heavy object. USP2001026183405.
  15. Scheck, Franz. Stair climbing device. USP2011118061460.
  16. DeMartino Dominick. Stair climbing hand truck. USP1998115833249.
  17. Misawa Rintaro (Tokorozawa JPX). Stair-climbing wheelchair carrier. USP1986014566550.
  18. Wu,Daniel P. H.. Suspension structure for front wheel assembly of wheelchair. USP2006067055835.
  19. Jochum Bierma AT. Two-wheel hand truck. USP2002056386552.
  20. Kakinuma, Takekazu; Yamano, Ikuo; Kawarasaki, Yoshihiro. Vehicle with two parallel wheels. USP2011017866430.
  21. Chieh-Chiung Chen TW. Wheel rack improvement of a trolley suitcase. USP2002096454065.
  22. Degonda Andre,CHX ; Wuthrich Thomas,CHX. Wheelchair for transporting or assisting the displacement of at least one user, particularly for handicapped person. USP1999105964473.
  23. Lim,Nag Bok. Wheelchair with forced driven front caterpillar wheels. USP2007127311160.
  24. Hunziker, Kurt; Huerlimann, Samuel; Tapis, Alexandre. Wheelchair with middle wheel drive. USP2012058186463.
  25. Fujita Kazuo (2971-650 Hishino ; Oaza ; Seto-shi ; Aichi-ken JPX). Wheeled carriage. USP1986054589345.